What device even uses this??
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Wait until you see this:
https://brokensecrets.com/2010/12/20/9-volt-batteries-contain-6-aaaa-batteries/
I took apart a lot of batteries as a kid. The nine volts never had batteries like this inside them.
Since seeing this picture I have disassembled about 50 nine volts looking for this and have found about 3. Some full of coin cells too.
Edit: I should say it was years ago I first saw this picture. I haven’t disassembled 50 batteries in the last 2 minutes
I haven’t disassembled 50 batteries in the last 2 minutes
I reject your edit and substitute the original assumption
I should say it was years ago I first saw this picture. I haven’t disassembled 50 batteries in the last 2 minutes
How many batteries can you disassemble in 2 minutes? I’m starting the timer… NOW! Go!
Some have stacked flat cells IIRC.
The carbon-zinc ones never do, but the alkaline ones do, the ones I opened, anyways ( a few decades ago )
some do, i have dissasembled some of them to look like this. not all of them though
And A23 cells have eight LR932 button cells inside
Could have about 1/3 more charge if they were solid.
Why aren’t they?
Because it’s a 9 volt battery.
Batteries are cylindrical because it’s the most efficient shape to make them in. There is a central electrode with the electrolyte around it. By making it cylindrical it’s distributed evenly. Imagine having it square, then in the corners the layers would be thicker than on the sides.
So that explains why the cells and normal AA batteries are cylinders. So why not have a 9 volt cylinder? That’s because the chemistry used for alkaline batteries produces 1.5 volts. A single cell, regardless of size, only produces 1.5V. So how do you get 9V out of a 1.5V battery? By putting 6 of them in series. 6 x 1.5V = 9V.
That’s a different chemistry that is not as high quality.
But… does the mythical A battery exist?
Every battery is a battery.
Most “batteries” are in fact cells.
This is why humans make good batteries.
Humans make terrible batteries, you leave one in a box for 6 months, you come back to a soggy, very stinky box.
Humans are much better as low power space heaters. As long as they have fuel, they’ll maintain a known temperature.
Interlinked
Is a battery with one cell still a battery? Is an empty library still a library? Is an empty breadbox still a breadbox?
A battery has many faces. A battery has no name.
It would appear
sonot.An A battery is usually just called a 17500. They were used in laptop batteries and such but are now used in hobbies more. Mostly for flashlights, vapes, or Lightsaber replicas.
Right - so that is a photo of an AA battery and a drawing of an A battery.
So if I take a photo of a gorilla and draw Sasquatch next to it I have proof of Sasquatch! This is good info to me.
BRB
An AA battery next to a dimensioned 2D drawing of an A battery (7mm grid).
(This is an placeholder image for A battery section of en:List_of_battery_sizes. To be replaced with an actual example as soon as one comes along.)
Date 19 June 2011
My mistake!
I think you were right, it does exist, but Wikipedia doesn’t have a picture of one they can legally use. For example I found this:
https://www.batteryequivalents.com/a-size-battery-equivalents-and-replacements.html
Honestly it feels like “1/2AA Battery” should just be an “A battery”
Ah - so I need to put the drawing on Wikipedia. Noted!
Anything else that’s needed? Quickly please as I’ve already called NYT and CNN
You could read the text next to it. They have an official specification, and they’re occasionally used as cells in larger battery packs, but they never got adopted in consumer products, so you can’t just buy an off the shelf A battery. Nobody has bothered to get a picture of one, because nobody actually cares that much.
Can someone fix this dire state of knowledge?
Thanks - I’m adding some text now next to the drawing about occasional sightings in Canada, but as they don’t care about capturing it nobody has a picture of it. Hence validating my drawing as the only proof.
No public image at least.
So does the B battery
There’s even C batteries, they were known as baby batteries when I grew up, and quite a few ghetto blasters used them
Funny. I have 3rd-party scripts disabled and it spawns endless search fields.
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That’s preposterous
Usually they’re used in thin devices where a bigger battery wouldn’t fit. Lots of computer styluses take AAAA batteries, including the Microsoft Surface Pen. There are also some small flashlights and laser pointers that use them.
microsoft surface pen is my touchstone for this. the only way i could get new batteries was online and the pen lasted for so long if i bought a pack of 4 batteries i’d have lost the other two but the time they ran or so id need to but a whole new pack.
I’m fairly certain you can take apart most 9 volt batteries to get at the AAAA batteries inside
Yeah I bought a 6 pack of them when I bought my pixel slate. They expired after I’d used two
All my remotes use them
There are six of these in some 9V piles
Which was the secret knowledge for those of us with pen lights or active stylii back in the day that required AAAA cells. And then you’d find a cheap brand of 9v that actually had a stack of nonstandard square cells inside it instead… Bastards.
Certain lantern batteries are filled with AAs as well
I’ve got one that takes AA’s OR 18650’s. Its pretty sweet.
I remember when I had a surface tablet, the stylus thing used a AAAA battery
Save money buying just 1 AAAA battery and cutting it in half for two AA batteries.
I think they follow Hydra rules, if you cut it in half you end up with an AAAAAAAA battery
Hail Hydraaaaaaaa!
Where they made by Ubisoft?
They are only sold as a temporary license. Then Ubisoft breaks into your house and takes them away.
It’s what 9v batteries are made of. 6 AAAA batteries in a box.
Some are. Others are stacked like this:
I have a wacom-type pen for a tablet that uses one of those. It was a total pain in the ass the time I was traveling and accidentally discharged it by jamming the button in a tight-packaged bag. Turns out, they are pretty much only available online. No normal shop ever stocks them, not even electronics shops nor radio shacks. Barely anyone even heard of them. Tried disassembling a few 9V’s, but all of them were the stacked kind. And with international shipping going 2-6 weeks and me changing locations more often than that, it was an extremely difficult to get hold of them.
When Dan’s Data reviewed these, he said something like “even if you use this in space, you are still no further away from a shop that sells replacements than you would be at home”
The stylus on a surface pro 7 uses one.
Same goes for the kobo libra 2’s stylus
Yep, I bought a pack of these, but then i didn’t need them because I didn’t use the stylus enough/stylus had a good battery life, BUT then when I did want to use the stylus I had no fucking idea where I stored those batteries.
My old Genius graphics tablet used AAA batteries, as it was from the times when Wacom’s patents on battery-free pens haven’t expired.
it looks like batteries are screaming like AAAAAAAAA
Every single 9 volt battery you’ve used and original Surface Pen.
Only name brand. Take apart a discount 9V and it’s just one big pile.
I’ve only seen the stack one, but I took apart lots of procells
I had a pen and pad that copied what it wrote onto a palm pilot that used these.
I use them in my active pens.
/c/sounding
Lemmy has bathymetry enthusiasts?
